OpenAI DevDay 2026: GPT-6 Astra, ChatGPT, Codex & New Builder Tools

OpenAI Blog · Sep 29 · 1 min read

What happenedOpenAI's DevDay 2026 unveiled over 20 significant announcements, including the highly anticipated GPT-6 Astra, updates to ChatGPT and Codex, and new API functionalities. The event also highlighted advancements in security and introduced a suite of new tools designed to empower developers.

Why it matters for marketersThe rapid evolution of OpenAI's core models and developer tools signals a new era of AI-powered applications. Marketers must prepare for increasingly sophisticated AI capabilities that will reshape customer engagement and product development.

Topics: openai, gpt-6, developer tools, chatgpt

The week in AI marketing. Every Monday.

The stories that mattered last week and what they mean for your work. Free, unsubscribe anytime.